Sewing-machine



(NoModelJ- 2 Sheets-Sheet I.

J BOPPEL SEWING MACHINE.

No. 281,008. Patented July 10,118.88:

www

ulmllll Y n. Pneus www n. c.

(No Model.)

2 Sheets-Sheet 2.

J. BOPPBL.

y. 'SEWING Mmmm.

Patented July 10, 188s.

N. PEYERS. mbmogupbur. Waxmgtenm. C.

justable bracket.

UNITE-D STATESV PATENT Genion.

JACOB BOPPEL, OF NEWARK, NEW JERSEY.

SEWING-MACHINE.

SPECIFICATION forming part of Letterslatent No. 281,008, dated July 10,1883,

Application filed Mm ToI all whom ib may concern:

Beit known that I, JACOB BOPPEL, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Sewing-Machines; andI'do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to "make and use the same, reference beinghad to the accompanying drawings, and to letters of reference markedthereon, which forma part of this specification.

My invention has reference to improvements in sewing-machines by whichadvantages are secured, as will be shown hereinafter.

The invention consists of such an arrangement and combination of partsas will be hereinafter set forth, and finally embodied in the claims.

In the drawings, in which similar letters of reference indicate likeparts in each ofthe several iigures, Figure l is a plan of the underside of a bed-plate of a sewing-machine, showing a part of theinvention. Fig. 2 is an elevation of the face of the arm of asewing-machine with' the y face-plate removed, showing the needle-barand the parts of my invention connected thereto and operating inconjunction therewith, the lower part of said drawing showing thebed-plate in cross-section; Fig. 3 is a perspective view of the take-upmechanism, and Fig. 4 is a side elevation of the ad- Ihe objectof thisinvention is to simplify the construction of a sewing-machine, lessenthe friction, and thus the wear and tear of the machine and the work ofthe operator.

In the drawings, a is a bed-plate of a sewing-machine. b is a rodconnecting the crank mechanism c with the shuttle-driver d. e isanadjustable link, one end of which is pivoted to the saidconnecting-rod b and the other to the bed-plate, as shown in Fig. 1. Therod b is not connected directly to the shuttle-driver d, biitis pivotedto asliding eye-piece, f, which incloses and moves on the shuttle-driverd, as is evident by reference to Fig. 2. Instead of the slidingeye-piece f, the driver d may have a slot therein, with a pin attachedto the connecting-rod working in said slot. The said driver d is pivotedto an adjustable bracket, g,

'ch 5, 1893. (No model.)

which is fastened to the bed-plate, said bracket being adjustable bymeans of screws or pins working in slots in said bracket, vas shown inFig. 4, and is. adapted by means of such adjustment to vvary therelation of the shuttle driver and carrier to the shuttle-race. At theother end of the driver d is the shuttle-carrier h, within which is theshuttle vi, both moving on a curved way, j', which is recessed at j forthe passage of the needle.

In Fig. 2, m is a needle-bar. n is a plate on the'end of the shaft. o isa link, one end being pivoted to the needle-bar and the other pivoted toa projection on the shaft-plate a, as shown in Fig. 2. p is a leverjointed at p', one end of which is pivoted to the face-plate of the armat q and the other end fastenedto the take-up fr, forming an integralpart with the same, as is shown in Fig. 3, behind the needlebar m, saidjointed lever p being behind the liiik and needle-bar. s is a roller orprojection on the shaft-plate n, which comes in contact with the lever pas the shaft and shaftplate n revolve.

rIhe parts of my invent-ion operate substantiallyasfollows: The rotarymotion ofthe shaft is converted into a reciprocating motion in theshuttle-carrier through the following train of mechanism: theconnecting-rod I), adjustable link e, sliding eye-piece f, andshuttle-driver d, pivoted to the adjustable bracketg. Fig. l representsthe shuttle about to pass forward through the loop. The lever Z1 andeye-piece f are at the farthest point from the carrier h, and

be adjusted, if necessary, either by means of the adjustable link e, orby shifting the said adjustable link c to either of the holes b inconnecting-rod b, or by both.

Vhen the machine is in operation the needlebar m, Fig. 2, movescontinually up and down, being connected with the revolving shaft-platethe power applied at this point causes the shut-- IOO n by the link o,and the take-up i, Fig. 2, moves A said take-up is still furtherdepressed or re-V tarded, in order to permit the shuttle to pass throughthe loop. This result I accomplish by means of the jointed lever p, oneend of which is fastened to the take-up r, the other pivoted at q, Fig.2, and the roller or projec-r tion s, all of which operate as follows:When the take-up reaches its lowest point by the downward movement ofthe needle-bar, the said roller or projection on the revolvingshaftplate n strikes the jointed lever p and lowers the take-up stillfurther, thus giving the shuttle ample time to pass through the loop,and when the roller clears the lever the take-up springs up to itsnormal position, ready to descend with the needle-bar to finish ortighten Ithe stitch. By means of this additional motion to the take-up Ido away with the cam motion on lthe needle-bar heretofore employed. Onaccount of the take-up and shuttle stopping at the same time, a morefinished stitch is produced.

The shuttle can be inserted in the shuttlecarrier h through an openingin the bed-plate over the curved way j, said opening having a slidingcover, as indicated by the dotted lines,

Fig. l.

Having thus described my invention, what I claim is- 1. In a4Sewine-illahill, the combination, with `a crank mechanism, '21S :acnnene'- rod, as b, an adjustable link, as e, and a movable bearing,asf, of an adjustable bracket, as g, a shuttle-driver, as d, andshuttle-carrier, as h, all substantially as set forth.

2. In a sewing-machine, the combination, with a crank mechanism, as c,connecting-rod, as b, and an eye-piece encircling and moving or slidinguponrthe shuttle-driver d, said eyepiece-being pivoted totheconnecting-rod b, of an adjustable link, as c, all substantially as setforth.

3. In a sewing-machine, the combination, with a needle-bar, as m, and atake-up, as r, of means whereby the take-up is lowered still furtherafter it has been carried down as far as possible by the needle-bar, allsubstantially asset forth.

4. In a sewing-machine, the combination, with a shaft-plate, as n,having thereon a projection or roller, Aas s, ,of a jointed lever, as p,a take-up, as r, la needle-bar, yas m, land means for connecting saidneedle-bar with said Ashaftplate, as o, all substantially las and lforthe purposes herein described.

In testimony that I .claim the foregoing I have hereunto set my handthis 13th .day of February, 1883. j

JACOB Borrar.

vWitnesses:

OLIVER BRAKE; F. F. CAMPBELL.

